论文标题
从宽线区域到MRK 110中波长依赖性滞后的亮度依赖性贡献
The luminosity-dependent contribution from the broad line region to the wavelength-dependent lags in Mrk 110
论文作者
论文摘要
我们已经以高吸积率（$ l/l _ {\ rm edd} \ oft40 \％$）在高吸积率（$ l/l _ {\ l _ {\ rm edd} \％$）中测量了X射线，UV和光条之间的滞后滞后，主动银河核MRK 110在2019年2月和9月的两个密集监测活动中，我们分配了三个间隔x-ray x-ray x-ray x-ray x-ray x-ray x-ray x-ray x-ray x-ray x-ray x-ray x-ray x-ray x-ray x-ray x-ray x rame不同。第一个间隔已经发表在Vincentelli等人。 （2021），具有最低的X射线光度，并且没有表现出U波段过量的正滞后滞后，或者在大多数AGN中看到的X射线多余的负滞后滞后。但是，这些多余的滞后在随后的两个较高X射线光度的间隔中可见。尽管数据有限，但多余的滞后似乎以X射线光度扩展。我们的建模表明，积聚盘对X射线的重新加工期望的滞后几乎没有变化，而亮度的增加。因此，由于U频段过量几乎可以肯定是由Balmer连续排放引起的，因此我们将这些滞后的变化归因于BLR的贡献变化。随着电离发光度的增加，BLR的内半径通常增加，很容易解释这种变化。
We have measured the wavelength-dependent lags between the X-ray, UV and optical bands in the high accretion rate ($L/L_{\rm Edd}\approx40\%$) Active Galactic Nucleus Mrk 110 during two intensive monitoring campaigns in February and September 2019. We divide the observations into three intervals with different X-ray luminosities. The first interval, already published in Vincentelli et al. (2021), has the lowest X-ray luminosity and did not exhibit the U-band excess positive lag, or the X-ray excess negative lag that is seen in most AGN. However, these excess lags are seen in the two subsequent intervals of higher X-ray luminosity. Although the data are limited, the excess lags appear to scale with X-ray luminosity. Our modelling shows that lags expected from reprocessing of X-rays by the accretion disc vary hardly at all with increasing luminosity. Therefore, as the U-band excess almost certainly arises from Balmer continuum emission from the broad line region (BLR), we attribute these lag changes to changes in the contribution from the BLR. The change is easily explained by the usual increase in the inner radius of the BLR with increasing ionising luminosity.
